On Grade by Jana L | Mar 3, 2022 | Glossary of Terms, Glossary of Terms -O, Uncategorized | 0 comments Refers to the ground level of a building as it is at the same level as the surrounding ground. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.